Heat exchange ventilator and air conditioning system

Abstract

The present disclosure provides a heat exchange ventilation apparatus capable of performing ventilation control by accurately calculating the temperature of air flowing through an indoor air supply port without providing a temperature sensor at the indoor air supply port of a housing.SOLUTION: A heat exchange ventilation apparatus according to the present disclosure includes a supply air duct including a supply air heat exchange air duct and a supply air bypass air duct, an exhaust air duct, a total heat exchanger configured to exchange heat between the supply air heat exchange air duct and the exhaust air duct, a supply air bypass damper configured to adjust an air flow rate in the supply air bypass air duct, and a temperature calculator configured to calculate an indoor supply air temperature that is a temperature of air flowing through an indoor supply port.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a heat exchange ventilator and an air conditioning system. [Background technology]

[0002] Patent Document 1 discloses a heat exchange ventilator that adjusts the indoor temperature by using outside air by opening and closing a bypass damper to switch between a total heat exchange ventilation passage and a normal ventilation passage. In this heat exchange ventilator, the opening degree of the bypass damper is controlled based on signals from an outside air temperature sensor installed at the outdoor air intake port and an indoor temperature sensor installed at the indoor exhaust port or an intake air temperature sensor installed at the indoor air supply port. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 6-265188 Summary of the Invention [Problem to be solved by the invention]

[0004] The present disclosure provides a heat exchange ventilation device that can accurately calculate the temperature of air flowing through an indoor air intake port and perform ventilation control without installing a temperature sensor in the indoor air intake port of the housing, and an air conditioning system equipped with a heat exchange ventilation device. [Means for solving the problem]

[0005] One aspect of a heat exchange ventilation device according to the present disclosure is a heat exchange ventilation device that performs total heat exchange ventilation between a target space within a building and the outside of the building, and includes an intake air duct that connects an outdoor intake port and an indoor intake port, and includes an intake air duct that includes an intake air heat exchange air duct and an intake air bypass air duct; an exhaust air duct that connects an indoor exhaust port and an outdoor exhaust port; a total heat exchanger that exchanges heat between air passing through the intake air heat exchange air duct and air passing through the exhaust air duct; an intake air bypass damper provided in the intake air duct that adjusts the intake air bypass airflow rate, which is the amount of air flowing into the intake air bypass air duct; and a temperature calculation unit that calculates the indoor supply air temperature, which is the temperature of the air flowing through the indoor intake air port, and the temperature calculation unit calculates the indoor supply air temperature based on the outdoor air temperature, which is the temperature outside the building, the indoor temperature, which is the temperature inside the target space, and the intake air damper opening, which is the opening degree of the intake air bypass damper.

[0006] Another aspect of a heat exchange ventilation device according to the present disclosure is a heat exchange ventilation device that performs total heat exchange ventilation between a target space within a building and the outside of the building, and includes: an intake air duct connecting an outdoor intake port and an indoor intake port; an exhaust air duct that includes an exhaust heat exchange air duct and an exhaust bypass air duct connecting an indoor exhaust port and an outdoor exhaust port; a total heat exchanger that performs heat exchange between air passing through the exhaust heat exchange air duct and air passing through the intake air duct; an exhaust bypass damper provided in the exhaust air duct that adjusts the exhaust bypass airflow rate, which is the amount of air flowing into the exhaust bypass air duct; and a temperature calculation unit that calculates the indoor supply air temperature, which is the temperature of the air flowing through the indoor intake port, and the temperature calculation unit calculates the indoor supply air temperature based on the outdoor air temperature, which is the temperature outside the building, the indoor temperature, which is the temperature inside the target space, and the exhaust damper opening, which is the opening degree of the exhaust bypass damper.

[0007] Another aspect of a heat exchange ventilation device according to the present disclosure is a heat exchange ventilation device that performs total heat exchange ventilation between a target space within a building and the outside of the building, and includes an intake air duct connecting an outdoor intake port and an indoor intake air duct, an exhaust air duct connecting an indoor exhaust port and an outdoor exhaust port, a total heat exchanger that exchanges heat between air passing through the exhaust air duct and air passing through the intake air duct, an inter-air duct damper provided between the exhaust air duct and the intake air duct that adjusts an inter-air duct airflow rate that is the airflow rate between the exhaust air duct and the intake air duct, and a temperature calculation unit that calculates an indoor supply air temperature that is the temperature of air flowing through the indoor supply air duct, and the temperature calculation unit calculates the indoor supply air temperature based on an outdoor air temperature that is the temperature outside the building, an indoor temperature that is the temperature inside the target space, and an inter-air duct damper opening that is the opening degree of the inter-air duct damper.

[0008] Another aspect of a heat exchange ventilation device according to the present disclosure is a heat exchange ventilation device that performs total heat exchange ventilation between a target space within a building and the outside of the building, and includes a housing that has formed therein an intake air duct connecting an outdoor air intake port and an indoor air intake port and an exhaust air duct connecting an indoor exhaust port and an outdoor exhaust port, a total heat exchanger housed within the housing that performs heat exchange between air passing through the exhaust air duct and air passing through the intake air duct, an environmental ventilation damper that adjusts the ventilation between the exhaust air duct and / or the intake air duct and the space in which the housing is installed, and a temperature calculation unit that calculates an indoor supply air temperature, which is the temperature of air flowing through the indoor air intake port, and the temperature calculation unit calculates the indoor supply air temperature based on an outdoor air temperature, which is the temperature outside the building, an indoor temperature, which is the temperature inside the target space, and an environmental damper opening, which is the opening degree of the environmental ventilation damper.

[0009] The air conditioning system according to the present disclosure includes any one of the heat exchange ventilation devices and an air conditioner that performs air conditioning for the target space, the air conditioner including an outdoor unit having an outdoor temperature sensor that measures the temperature outside the building and an indoor unit having an indoor temperature sensor that measures the temperature inside the target space, and the temperature calculation unit calculates the indoor supply air temperature using the temperatures measured by the outdoor temperature sensor and the indoor temperature sensor as the outdoor air temperature and the indoor temperature, respectively. [Effects of the Invention]

[0010] According to the present disclosure, it is possible to provide a heat exchange ventilation device that can accurately calculate the temperature of air flowing through an indoor air intake port and perform ventilation control without installing a temperature sensor in the indoor air intake port of the housing, and an air conditioning system equipped with a heat exchange ventilation device. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a diagram showing a configuration of a heat exchange ventilation device according to a first embodiment. [Figure 2] FIG. 1 is a block diagram showing a configuration of a control device according to a first embodiment. [Figure 3] 1 is a flowchart showing the procedure of the operation of the heat exchange ventilation device according to the first embodiment. [Figure 4] FIG. 10 is a diagram showing the configuration of a heat exchange ventilation device according to a second embodiment. [Figure 5] A block diagram showing the configuration of a control device according to a second embodiment. [Figure 6] FIG. 10 is a diagram showing the configuration of a heat exchange ventilation device according to a third embodiment. [Figure 7] A block diagram showing the configuration of a control device according to a third embodiment. [Figure 8] FIG. 10 is a diagram showing the configuration of a heat exchange ventilation device according to a fourth embodiment. [Figure 9] A block diagram showing the configuration of a control device according to a fourth embodiment. [Figure 10] FIG. 10 is a diagram showing the configuration of an air conditioning system according to a fifth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0012] (Findings that formed the basis of this disclosure) At the time the inventors came up with the idea for the present disclosure, there was technology in a heat exchange ventilation device that adjusts the indoor temperature by using outside air by opening and closing a bypass damper to switch between a total heat exchange ventilation passage and a normal ventilation passage, in which the opening degree of the bypass damper was controlled based on signals from an outside air temperature sensor provided at the outdoor air intake and an indoor temperature sensor provided at the indoor exhaust port or an intake air temperature sensor provided at the indoor air intake.

[0013] However, conventional technology does not disclose how to accurately calculate the airflow temperature of an indoor air supply port, which affects the temperature of the indoor space, without using a temperature sensor.From the perspective of appropriately controlling the indoor temperature while reducing equipment costs and achieving rationalization, the inventors discovered a problem in which it was desirable to realize a configuration that could accurately calculate the airflow temperature of an indoor air supply port without using a temperature sensor at the indoor air supply port, and in order to solve this problem, they came up with the subject matter of the present disclosure. The present disclosure provides a heat exchange ventilation device that can accurately calculate the temperature of air flowing through an indoor air intake port and perform ventilation control without installing a temperature sensor in the indoor air intake port of the housing, and an air conditioning system equipped with a heat exchange ventilation device.

[0014] Hereinafter, embodiments will be described in detail with reference to the drawings. However, unnecessary detailed description may be omitted. For example, detailed description of well-known matters or redundant description of substantially the same configuration may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by those skilled in the art. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0015] (Embodiment 1) Hereinafter, the first embodiment will be described with reference to FIGS. [1-1. Configuration of heat exchange ventilation equipment] FIG. 1 is a diagram showing an example of the configuration of a heat exchange ventilator 1 according to the first embodiment. The heat exchange ventilation device 1 performs total heat exchange ventilation between a target space within a building and a space outside the building. The target space is, for example, a room provided inside a building such as a residence. Hereinafter, "indoor" and "outdoor" refer to the inside of the target space that is the target of ventilation by the heat exchange ventilation device 1 and the space outside the building where the room is located, respectively.

[0016] The heat exchange ventilator 1 includes a total heat exchanger 3 in a housing 2. The housing 2 is provided with an indoor exhaust port 21 for introducing indoor air into the housing 2 as return air (RA), and an outdoor exhaust port 22 for discharging the return air (RA) introduced into the housing 2 to the outside of the building as outdoor exhaust air (EA). The housing 2 is also provided with an outdoor air intake port 24 for introducing outdoor outside air (OA) into the housing 2, and an indoor air supply port 23 for supplying the outdoor air OA introduced into the housing 2 into the room as supply air (SA).

[0017] For example, the indoor exhaust vent 21 and the indoor air inlet 23 are each connected by an appropriate duct to an opening provided in the ceiling or the like of the target space, and the outdoor exhaust vent 22 and the outdoor air inlet 24 are each connected by an appropriate duct to an opening provided in the outer wall of the building.

[0018] The installation space 9 in which the housing 2 is installed is, for example, the space above the ceiling of a building in which the target space is located.

[0019] Inside the housing 2, a partition wall 4 that divides the internal space of the housing 2 forms an exhaust air duct 5 connecting the indoor exhaust port 21 and the outdoor exhaust port 22, and an intake air duct 6 connecting the outdoor intake port 24 and the indoor intake port 23.

[0020] An exhaust fan 71 is provided near the outdoor exhaust port 22 inside the housing 2, and an intake fan 72 is disposed near the indoor intake port 23. The exhaust fan 71 and the intake fan 72 generate airflows in the exhaust airflow duct 5 and the intake airflow duct 6, respectively.

[0021] The total heat exchanger 3 is disposed in a range that crosses the entire exhaust air duct 5, straddles the partition wall 4, and crosses a part of the supply air duct 6. As a result, the supply air duct 6 includes a supply air heat exchange air duct 61 through which the airflow passes through the total heat exchanger 3, and a supply air bypass air duct 62 through which the airflow does not pass through the total heat exchanger 3.

[0022] An intake air bypass damper 80 is provided in the intake air duct 6. The intake air bypass damper 80 controls the intake air bypass flow rate F SB Adjust.

[0023] The supply air bypass damper 80 is driven by an actuator 81 and is opened and closed within a range from a fully closed position FC, where the supply air bypass air passage 62 is fully closed, to a fully open position FO, where the supply air bypass air passage 62 is fully open. The actuator 81 is, for example, a motor.

[0024] The heat exchange ventilation device 1 includes a control device 100 inside a housing 2. The control device 100 controls the temperature of the supply air (SA) supplied from the indoor supply air port 23 toward the target space to be equal to or lower than a predetermined target temperature T set The operation of each part of the heat exchange ventilation device 1 is controlled so as to satisfy the above.

[0025] FIG. 2 is a diagram illustrating an example of the configuration of the control device 100. As shown in FIG. The control device 100 is a computer including a processor 101 such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit) and a memory 102. The control device 100 may include a communication device for communicating with other devices such as a remote control (not shown) arranged in the target space, according to conventional technology.

[0026] The memory 102 is a memory that stores programs and data. The memory 102 stores a program 103. The memory 102 has a non-volatile storage area. The memory 102 also has a volatile storage area and constitutes a work area for the processor 101. The memory 102 is constituted by, for example, a ROM (Read Only Memory) or a RAM (Random Access Memory).

[0027] The processor 101 includes an operation control section 104 and a temperature calculation section 105 as functional elements or functional units.

[0028] These functional elements of the processor 101 are realized, for example, by the processor 101 of the control device 100, which is a computer, reading and executing a program 103 stored in a memory 102. The program 103 can be stored in any computer-readable storage medium. Alternatively, all or part of the functional elements of the processor 101 can be configured by hardware each including one or more electronic circuit components.

[0029] The operation control unit 104 controls the operations of the total heat exchanger 3, the exhaust fan 71, the intake fan 72, and the intake bypass damper 80. RA Target temperature T set The settings can be given according to the prior art, for example by the above-mentioned remote control.

[0030] When the operation control unit 104 receives the operation start instruction, it causes the total heat exchanger 3 to start operating. In addition, the operation control unit 104 turns on the exhaust fan 71 and the intake fan 72, and causes each fan to operate at a predetermined rotation speed. For example, the operation control unit 104 controls the outdoor air temperature T OA and the indoor temperature T RA and target temperature T set Based on this, the direction of heat flow in the heat exchange in the total heat exchanger 3 is set from the exhaust air duct 5 to the intake air duct 6 or from the intake air duct 6 to the exhaust air duct 5. Outside temperature T OA and indoor temperature T RA can be obtained, for example, from a temperature sensor (not shown) installed outside the building in which the target space is located and a temperature sensor (not shown) installed inside the target space. The same applies to other embodiments 2 to 4 described later.

[0031] In addition, the operation control unit 104 controls the actuator 81 to adjust the intake air damper opening degree O, which is the opening degree of the intake air bypass damper 80. PS Controls the intake damper opening. PS may be, for example, the rotation angle from the fully closed position FC of the supply air bypass damper 80 that opens from the fully closed position FC toward the fully open position FO.

[0032] The operation control unit 104 may, for example, set a target temperature T set and the temperature outside the building, T OA and the indoor temperature T RA and the indoor supply air temperature T (described later) calculated by the temperature calculation unit 105. SA Based on this, the intake air damper opening degree O PS The operation control unit 104 controls the current air intake damper opening degree O PS The information is notified to the temperature calculation unit 105 at predetermined time intervals, for example.

[0033] The temperature calculation unit 105 calculates the outside air temperature T OA and the indoor temperature T RA and intake damper opening O PS Based on this, the indoor supply air temperature T SA Calculate.

[0034] Specifically, for example, the temperature calculation unit 105 calculates the intake damper opening degree O PS Based on this, the heat exchange intake air volume F, which is the airflow volume of the intake air heat exchange air passage 61, is SH The intake bypass airflow rate F SB The intake air bypass ratio R is the ratio of SBHere, the temperature calculation unit 105 calculates the supply air bypass rate R based on the ventilation resistance of the total enthalpy heat exchanger 3 in the supply air heat exchange air passage 61. SB The intake damper opening degree O can be calculated. PS and the supply air bypass rate R SB The relationship between the above can be determined in advance (for example, calculated in advance or measured) and stored in the memory 102 as tabular information.

[0035] The temperature calculation unit 105 also calculates the outside air temperature T OA and the indoor temperature T RA Based on the heat exchange capacity of the total heat exchanger 3, the supply air delivery temperature T ES Calculate. Then, the temperature calculation unit 105 calculates the outside air temperature T OA and the supply air bypass rate R SB Based on this, the intake air delivery temperature T ES The temperature change due to the outside air (OA) from the intake bypass air duct 62 that joins the output airflow is corrected to the above, and the corrected intake air delivery temperature T ES Indoor supply air temperature T SA The outside air temperature T OA , supply air bypass rate R SB , and the supply air delivery temperature T ES The indoor supply air temperature T determined for various combinations of values ​​of SA The value of is determined in advance, and the indoor supply air temperature T SA The calculation table may be stored in the memory 102.

[0036] However, as an exception, when the exhaust fan 71 is stopped, the temperature calculation unit 105 calculates the indoor supply air temperature T SA , the outside air temperature T OA When the exhaust fan 71 is stopped, heat exchange between the exhaust air duct 5 and the intake air duct 6 in the total heat exchanger 3 is not performed effectively, so the outside air (OA) flowing in from the outdoor intake port 24 is calculated as a temperature equal to the outside air temperature T OA This is because the supply air (SA) remains almost the same.

[0037] The temperature calculation unit 105 also calculates the indoor supply air temperature T based on the heat generation amounts of the exhaust fan 71 and the supply fan 72. SA For example, the temperature calculation unit 105 may calculate the supply air delivery temperature T ES When calculating the amount of correction for the above correction, it is possible to take into account the temperature rise of the output airflow of total heat exchanger 3 when it passes through intake air blower 72. Alternatively, temperature calculation unit 105 may determine the amount of correction by taking into account the effect that heat generated by exhaust air blower 71 and / or intake air blower 72 increases the temperature of housing 2 and thereby increases the temperature of the air flowing through exhaust air duct 5 and / or intake air duct 6.

[0038] When the operation control unit 104 performs variable control of the fan rotation speeds of the exhaust fan 71 and the intake fan 72 to change the airflow rates, the temperature calculation unit 105 calculates the intake air delivery temperature T ES Calculation of the supply air temperature T ES When correcting the intake air delivery temperature T ES is calculated as a smaller value, and the supply air temperature T ES The amount of correction for the above can be increased.

[0039] In this case, the indoor supply air temperature T SA The calculation table can be prepared for each predetermined fan rotation speed of the exhaust fan 71 and the intake fan 72, for example.

[0040] When the operation control unit 104 controls the heat exchange capacity of the total heat exchanger 3 to change in accordance with predetermined conditions, the temperature calculation unit 105 calculates the intake air delivery temperature T ES can be calculated.

[0041] Furthermore, when a gap occurs in the intake air bypass damper 80 when the intake air bypass damper 80 is in the fully open position FO and / or the fully closed position FC, the temperature calculation unit 105 calculates the amount of air leakage due to the gap in the intake air bypass damper 80 by multiplying the intake air damper opening O when there is no air leakage by 0. PS Offset opening converted to O Soff may be used to calculate the indoor supply air temperature TSA when the supply air bypass damper 80 is in the fully open position FO and / or the fully closed position FC.

[0042] Specifically, when a gap occurs when the supply air bypass damper 80 is in the fully closed position FC, the temperature calculation unit 105 calculates the supply air damper opening degree O even if the supply air bypass damper 80 is in the fully closed position FC. PS is the offset opening O Soff The indoor supply air temperature T SA Furthermore, when a gap occurs when the supply air bypass damper 80 is in the fully open position FO, the temperature calculation unit 105 calculates the supply air damper opening degree O even when the supply air bypass damper 80 is in the fully open position FO. PS However, the offset opening O is greater than the value representing the fully open state. Soff The indoor supply air temperature T SA can be calculated.

[0043] In addition, when the amount of gap generated when the intake air bypass damper 80 is in the fully open position FO is different from the amount of gap generated when the intake air bypass damper 80 is in the fully closed position FC, the offset opening degree O used when the intake air bypass damper 80 is in the fully open position FO is set to 0. Soff and the offset opening O used when the intake air bypass damper 80 is in the fully closed position FC. Soff The value of can be different from the value of

[0044] In addition, since the gap amount of the intake air bypass damper 80 may change over time, the temperature calculation unit 105 calculates the offset opening O according to the elapsed time from the manufacturing date of the heat exchange ventilation device 1 to the present. Soff Using this, the indoor supply air temperature T SA The offset opening O according to the elapsed time from the manufacturing date can be calculated. SoffThe value of can be calculated in advance from a standard value (for example, a design value or an experimental value) of the gap amount according to the elapsed time and stored in the memory 102.

[0045] [1-2. Operation] Next, the operation of the heat exchange ventilator 1 will be described. Fig. 3 is a flowchart showing the procedure of processing performed by the processor 101, which is a computer of the heat exchange ventilator 1. The processing shown in Fig. 3 starts when the processor 101 receives an instruction to start operation. The instruction to start operation is given, for example, by a remote control (not shown) connected to the control device 100 so as to be able to communicate with it.

[0046] When the process starts, the operation control unit 104 first turns on the exhaust fan 71 and the intake fan 72 to start blowing air (S100), sets the intake bypass damper 80 to a predetermined opening degree (S102), and turns on the total heat exchanger 3 (S104).

[0047] Next, the temperature calculation unit 105 receives the intake air damper opening degree O from the operation control unit 104. PS information and adjust the intake damper opening PS From the intake air bypass rate R SB (S106). The temperature calculation unit 105 calculates the outside air temperature T OA and the indoor temperature T RA From the above, the intake air discharge temperature T of the airflow discharged from the total heat exchanger 3 in the intake air heat exchange air passage 61 is ES is calculated (S108).

[0048] Next, the temperature calculation unit 105 calculates the outside air temperature T OA and the intake air bypass rate R SB and the supply air temperature T ES From the indoor supply air temperature T SA For example, the temperature calculation unit 105 calculates the outside air temperature T OA and the supply air bypass rate R SB Based on this, the intake air delivery temperature T ES Correct the supply air temperature T ES Indoor supply air temperature T SA It is calculated as follows.

[0049] The temperature calculation unit 105 calculates the target temperature T set (S112), and the indoor supply air temperature T SA and target temperature T set Temperature difference ΔT s The target temperature T set can be given by the above-mentioned remote control and temporarily stored in the memory 102 by the operation control unit 104, for example.

[0050] Next, the temperature calculation unit 105 calculates the temperature difference ΔT s is a given threshold T h Then, it is determined whether the temperature difference ΔT s is a given threshold T h If the temperature is less than 100°C (YES in S116), the temperature calculation unit 105 determines whether an operation stop instruction has been received (S118). The operation stop instruction is given by, for example, the remote controller communicably connected to the control device 100.

[0051] If an operation stop instruction has not been received (S118, NO), the temperature calculation unit 105 returns to step S108 and repeats the process. On the other hand, if an operation stop instruction has been received (S118, YES), the temperature calculation unit 105 ends this process.

[0052] On the other hand, in step S116, the temperature difference ΔT s is a given threshold T h If it is equal to or greater than this (S116, NO), the temperature calculation unit 105 calculates the temperature difference ΔT s From the target damper opening O T (S120). The operation control unit 104 controls the air supply bypass damper 80 by instructing the actuator 81 so that the air supply damper opening becomes the target damper opening (S122), and the operation control unit 104 returns the process to step S106.

[0053] [1-3. Effects, etc.] As described above, the heat exchange ventilator 1 of the first embodiment has an intake air duct 6 connecting the outdoor intake port 24 and the indoor intake port 23 provided in the housing 2, and an exhaust air duct 5 connecting the indoor exhaust port 21 and the outdoor exhaust port 22. The intake air duct 6 includes an intake air heat exchange air duct 61 and an intake air bypass air duct 62, and an intake air bypass damper 80 provided in the intake air duct 6 controls an intake air bypass airflow rate F SB The housing 2 also contains a total heat exchanger 3 that exchanges heat between the supply air heat exchange air passage 61 and the exhaust air passage 5. The heat exchanging ventilator 1 also includes a control device 100. The temperature calculation unit 105 of the control device 100 calculates the outdoor air temperature T OA and the indoor temperature T RA and the intake air damper opening O, which is the opening of the intake air bypass damper 80. PS Based on this, the indoor supply air temperature T SA Calculate. As a result, in the heat exchange ventilation device 1 including the supply air bypass air passage 62 that does not pass through the total heat exchanger 3, the indoor supply air temperature T SA can be calculated.

[0054] Furthermore, according to the first embodiment, the temperature calculation unit 105 calculates the intake air damper opening degree O PS Based on this, the heat exchange intake air volume F, which is the amount of air flowing through the intake air heat exchange air passage 61, is calculated. SH and supply bypass ventilation volume F SB The intake air bypass rate R is the ratio of SB The temperature calculation unit 105 also calculates the outside air temperature T OA and the indoor temperature T RA Based on this, the temperature of the air discharged from the total heat exchanger 3 in the supply air heat exchange air passage 61 is determined as the supply air discharge temperature T ES Then, the temperature calculation unit 105 calculates the outside air temperature T OA and the supply air bypass rate R SB Based on this, the intake air delivery temperature T ES Correct the indoor supply air temperature T SA Calculate. This reduces the intake damper opening to OPS The supply air bypass ventilation volume F depends on SB Depending on the increase or decrease of ES In contrast, the temperature change of the supply air from the total heat exchanger 3 to the indoor supply air port 23 is corrected, so a more accurate indoor supply air temperature T SA can be calculated.

[0055] Furthermore, according to the first embodiment, the temperature calculation unit 105 calculates the intake air damper opening degree O PS Based on the ventilation resistance of the total heat exchanger 3, the intake air bypass rate R SB Calculate. As a result, the intake air bypass rate R is calculated by reflecting the imbalance in ventilation resistance between the intake air heat exchange air duct 61 that passes through the total heat exchanger 3 and the intake air bypass air duct 62 that does not pass through the total heat exchanger 3. SB can be calculated more accurately, so the indoor supply air temperature T SA can be calculated more accurately.

[0056] Furthermore, according to the first embodiment, the temperature calculation unit 105 calculates the amount of air leakage due to the gap in the intake air bypass damper 80 when the intake air bypass damper 80 is in the fully open position FO and / or the fully closed position FC, by multiplying the intake air damper opening O when there is no air leakage. PS Offset opening converted to O Soff is used to calculate the indoor supply air temperature T when the supply air bypass damper 80 is in the fully open position FO and / or the fully closed position FC. SA Calculate. As a result, even if there is a gap in the intake air bypass damper 80, the indoor intake air temperature T SA can be calculated more accurately.

[0057] According to the first embodiment, the heat exchange ventilation device 1 includes an exhaust fan 71 provided in the exhaust air duct 5. When the exhaust fan 71 is stopped, the temperature calculation unit 105 calculates the indoor supply air temperature T SA , the outside air temperature T OA It may be calculated as the temperature equal to As a result, the exhaust fan 71 stops, and heat exchange between the exhaust air and the supply air cannot be performed in the total heat exchanger 3, and the indoor supply air temperature T SA is the outside temperature T OA If the value becomes equal to the indoor supply air temperature T SA The outside air temperature T OA can be accurately calculated as the same value as

[0058] According to the first embodiment, the heat exchange ventilation device 1 includes an intake air blower 72 provided in the intake air duct 6 and an exhaust air blower 71 provided in the exhaust air duct 5. The temperature calculation unit 105 calculates the indoor supply air temperature T SA may be calculated. This allows the amount of heat generated by the intake air blower 72 and / or the exhaust air blower 71 to be reflected, and the indoor intake air temperature T SA can be calculated.

[0059] (Embodiment 2) The second embodiment will be described below with reference to FIGS. [2-1. Configuration of heat exchange ventilation equipment] Fig. 4 is a diagram showing an example of the configuration of a heat exchange ventilator 1A according to embodiment 2. In Fig. 4, the same elements as those shown in Fig. 1 are denoted by the same reference numerals as those shown in Fig. 1, and the above description of Fig. 1 is used.

[0060] The heat exchange ventilation device 1A has a configuration similar to that of the heat exchange ventilation device 1 according to embodiment 1, but a major difference from the heat exchange ventilation device 1 is that the intake air duct 6a connecting the outdoor intake vent 24 and the indoor intake vent 23 does not include an intake bypass air duct 62, and the exhaust air duct 5a connecting the indoor exhaust vent 21 and the outdoor exhaust vent 22 includes an exhaust heat exchange air duct 51a and an exhaust bypass air duct 52a.

[0061] The exhaust airflow duct 5a and the supply airflow duct 6a are formed inside the housing 2a by a partition wall 4a that divides the internal space of the housing 2a, and the total heat exchanger 3 is disposed in an area that crosses the entire supply airflow duct 6a, straddles the partition wall 4a inside the housing 2a, and crosses part of the exhaust airflow duct 5a. As a result, the exhaust airflow duct 5a includes an exhaust heat exchange airflow duct 51a through which the airflow passes through the total heat exchanger 3, and an exhaust bypass airflow duct 52a through which the airflow does not pass through the total heat exchanger 3.

[0062] An exhaust bypass damper 80a is provided in exhaust air passage 5a. Exhaust bypass damper 80a controls exhaust bypass airflow F EB Exhaust bypass damper 80a is opened and closed by actuator 81a within a range from a fully closed position FC, where exhaust bypass air passage 52a is fully closed, to a fully open position FO, where exhaust bypass air passage 52a is fully open. Actuator 81a is, for example, a motor.

[0063] The heat exchange ventilation device 1A includes a control device 100a inside a housing 2a. The control device 100a controls an indoor supply air temperature T SA is the predetermined target temperature T set The operation of each part of the heat exchange ventilation device 1 is controlled so as to satisfy the above.

[0064] Fig. 5 is a diagram showing an example of the configuration of the control device 100a. In Fig. 5, the same elements as those shown in Fig. 2 are denoted by the same reference numerals as those shown in Fig. 2, and the explanation of Fig. 1 above is used. In the control device 100a, the processor 101 executes the program 103a stored in the memory 102, thereby providing an operation control unit 104a and a temperature calculation unit 105a instead of the operation control unit 104 and the temperature calculation unit 105.

[0065] The operation control unit 104a has the same configuration as the operation control unit 104, but differs in that it controls the exhaust bypass damper 80a instead of the supply bypass damper 80. That is, the operation control unit 104a controls the exhaust damper opening degree O, which is the opening degree of the exhaust bypass damper 80a, by the actuator 81a. PE Controls the exhaust damper opening. PE may be, for example, the rotation angle from the fully closed position FC of the exhaust bypass damper 80a that opens from the fully closed position FC toward the fully open position FO.

[0066] The temperature calculation unit 105a has the same configuration as the temperature calculation unit 105, but is different from the intake damper opening degree O PS Instead of exhaust damper opening O PE Using the indoor supply air temperature T SA Calculate.

[0067] For example, the temperature calculation unit 105a calculates the exhaust damper opening degree O PE Based on this, the heat exchange exhaust volume F EH The exhaust bypass airflow rate F EB The exhaust bypass ratio R is the ratio of EB Calculate. The temperature calculation unit 105a calculates the outside air temperature T OA and the indoor temperature T RA Based on the heat exchange capacity of the total heat exchanger 3, the supply air delivery temperature T ES Calculate. Then, the temperature calculation unit 105a calculates the outside air temperature T OA and exhaust bypass rate R EB Based on this, the intake air delivery temperature T ES Whereas, the exhaust bypass rate R EB The amount of heat exchange between the exhaust air heat exchange air passage 51a and the supply air passage 6a, which may depend on the temperature, is corrected, and the corrected supply air delivery temperature T ES Indoor supply air temperature T SA The outside air temperature T OA , exhaust bypass rate R EB , and the supply air delivery temperature T ESThe indoor supply air temperature T determined for various combinations of values ​​of SA The value of is determined in advance, and the indoor supply air temperature T SA The calculation table may be stored in the memory 102.

[0068] As with the temperature calculation unit 105, the temperature calculation unit 105a calculates the indoor supply air temperature T SA , the outside air temperature T OA Calculate as the temperature equal to The temperature calculation unit 105a also calculates the indoor supply air temperature T based on the heat generation amounts of the exhaust fan 71 and the supply fan 72. SA may be calculated.

[0069] Furthermore, when the operation control unit 104a performs variable control of the fan rotation speeds of the exhaust air blower 71 and the supply air blower 72 to change the airflow rates, the temperature calculation unit 105a calculates the supply air delivery temperature T ES Calculation of the supply air temperature T ES When making the above correction to the airflow rate, the influence of the airflow rate calculated from the fan rotation speeds of the exhaust fan 71 and the intake fan 72 may be taken into consideration.

[0070] Furthermore, when a gap occurs when the exhaust bypass damper 80a is in the fully closed position FC, the temperature calculation unit 105a calculates the exhaust damper opening degree O even if the exhaust bypass damper 80a is in the fully closed position FC. PE is the offset opening O Eoff The indoor supply air temperature T SA Furthermore, when a gap occurs when the exhaust bypass damper 80a is in the fully open position FO, the temperature calculation unit 105a calculates the exhaust damper opening degree O even if the exhaust bypass damper 80a is in the fully open position FO. PE However, the offset opening O is greater than the value representing the fully open state. Eoff The indoor supply air temperature T SA can be calculated.

[0071] In addition, when the amount of the gap generated when the exhaust bypass damper 80a is in the fully open position FO is different from the amount of the gap generated when the exhaust bypass damper 80a is in the fully closed position FC, the offset opening O Eoff and the offset opening O used when the exhaust bypass damper 80a is in the fully closed position FC. Eoff The value of can be different from the value of

[0072] [2-2. Effects, etc.] As described above, the heat exchange ventilator 1A of the second embodiment has an air supply duct 6a connecting the outdoor air intake vent 24 and the indoor air supply vent 23 provided in the housing 2a, and an exhaust duct 5a connecting the indoor exhaust vent 21 and the outdoor exhaust vent 22. The exhaust duct 5a includes an exhaust heat exchange duct 51a and an exhaust bypass duct 52a, and an exhaust bypass airflow rate F, which is the amount of air flowing through the exhaust bypass duct 52a, is controlled by an exhaust bypass damper 80a provided in the exhaust duct 5a. EB The housing 2a also includes a total heat exchanger 3 that exchanges heat between the exhaust heat exchange air duct 51a and the intake air duct 6a. The heat exchanging ventilator 1A also includes a control device 100a. The temperature calculation unit 105a of the control device 100a calculates the outdoor air temperature T OA and the indoor temperature T RA and the exhaust damper opening degree O, which is the opening degree of the exhaust bypass damper 80a. PE Based on this, the indoor supply air temperature T SA Calculate. As a result, in the heat exchange ventilation device 1A including the exhaust bypass air passage 52a that does not pass through the total heat exchanger 3, the indoor supply air temperature T SA can be calculated.

[0073] (Embodiment 3) Hereinafter, the third embodiment will be described with reference to FIGS. [3-1. Configuration of heat exchange ventilation equipment] Fig. 6 is a diagram showing an example of the configuration of a heat exchange ventilator 1B according to embodiment 3. In Fig. 6, the same elements as those shown in Fig. 1 are denoted by the same reference numerals as those shown in Fig. 1, and the above description of Fig. 1 is used.

[0074] The heat exchange ventilator 1B has a similar configuration to the heat exchange ventilator 1 according to embodiment 1, but a major difference from the heat exchange ventilator 1 is that the heat exchange ventilator 1B does not include an intake bypass air duct 62 and an intake bypass damper 80 in the intake air duct 6b, but includes an inter-air duct damper 80b in the partition wall 4b between the exhaust air duct 5b and the intake air duct 6b.

[0075] The exhaust air duct 5b and the intake air duct 6b are formed inside the housing 2b by a partition wall 4b that divides the internal space of the housing 2b, and the total heat exchanger 3 is positioned so as to cross the entire exhaust air duct 5b and the entire intake air duct 6b.

[0076] Inter-air-path damper 80b is arranged, for example, in partition wall 41b, which is a portion of partition wall 4b that is upstream of total enthalpy heat exchanger 3 along the airflow in air supply air path 6b.

[0077] The inter-air-path damper 80b is configured to adjust the airflow rate F between the exhaust air path 5b and the intake air path 6b. PB The air-passage damper 80b is opened and closed by an actuator 81b in a range from a fully closed position FC to a fully open position FO. The actuator 81b is, for example, a motor.

[0078] The heat exchange ventilation device 1B includes a control device 100b inside a housing 2b. The control device 100b controls an indoor supply air temperature T SA is the predetermined target temperature T set The operation of each part of the heat exchange ventilation device 1B is controlled so as to satisfy the above.

[0079] Fig. 7 is a diagram showing an example of the configuration of the control device 100b. In Fig. 7, the same elements as those shown in Fig. 2 are denoted by the same reference numerals as those shown in Fig. 2, and the explanation of Fig. 1 above is used. In the control device 100b, the processor 101 executes the program 103b stored in the memory 102, thereby providing an operation control unit 104b and a temperature calculation unit 105b instead of the operation control unit 104 and the temperature calculation unit 105.

[0080] The operation control unit 104b has the same configuration as the operation control unit 104, but differs in that it controls the inter-air-path damper 80b instead of the supply air bypass damper 80. That is, the operation control unit 104b controls the inter-air-path damper opening degree O, which is the opening degree of the inter-air-path damper 80b, by the actuator 81b. PP Controls the opening of the air duct damper. PP may be, for example, the rotation angle from the fully closed position FC of the inter-air-passage damper 80b that opens from the fully closed position FC toward the fully open position FO.

[0081] The operation control unit 104b may control the fan rotation speeds of the exhaust fan 71 and the supply fan 72 according to predetermined conditions, and change the airflow rates of the exhaust fan 71 and the supply fan 72 individually or simultaneously.

[0082] The temperature calculation unit 105b calculates the outside air temperature T OA and the indoor temperature T RA and the air duct damper opening O PP Based on this, the indoor supply air temperature T SA Calculate. Specifically, the temperature calculation unit 105b calculates the inter-air-path damper opening degree O PP Based on this, the airflow rate between the air channels F PB Calculate the calculated airflow rate between the air ducts F PB and the outside temperature T OA and the indoor temperature T RA and the indoor supply air temperature T SA Calculate the airflow rate between air ducts F PBmay be the amount of air passing through the inter-air-path damper 80b from the exhaust air duct 5b to the supply air duct 6b, or the amount of air passing through the inter-air-path damper 80b from the supply air duct 6b to the exhaust air duct 5b, depending on the relative size of the air flow rate of the exhaust fan 71 and the air flow rate of the supply fan 72.

[0083] For example, the temperature calculation unit 105b first calculates the outside air temperature T OA and the indoor temperature T RA Based on this, the temperature of the output airflow discharged from the total heat exchanger 3 in the supply air duct 6b is calculated as the supply air discharge temperature T ES Then, the temperature calculation unit 105 calculates the outside air temperature T OA and the indoor temperature T RA and the airflow rate between the air ducts F PB Based on the above, the calculated intake air delivery temperature T ES The temperature change that may occur due to the air returning from the exhaust air duct 5b through the inter-air-path damper 80b to the supply air duct 6b, or the air that flows in from the outdoor air intake port 24, passes through the inter-air-path damper 80b without passing through the total heat exchanger 3, and is discharged to the outdoor exhaust port 22, is corrected to obtain the corrected supply air delivery temperature T ES Indoor supply air temperature T SA It is calculated as follows.

[0084] For example, the temperature calculation unit 105 calculates the temperature when the air-path damper opening degree is O PP Large, inter-duct airflow rate F PB The greater the amount of air that flows from exhaust air duct 5b through inter-air-path damper 80b and returns to supply air duct 6b, the greater the indoor supply air temperature T SA When calculating the supply air temperature T ES Increase the amount of correction for

[0085] When the operation control unit 104b controls the fan rotation speeds of the exhaust fan 71 and the supply fan 72 to change the airflow rates of the exhaust fan 71 and the supply fan 72 individually or simultaneously, the temperature calculation unit 105b calculates the indoor supply air temperature T SA may be calculated.

[0086] For example, the temperature calculation unit 105b can calculate the airflow rate of the exhaust fan 71 and the airflow rate of the supply fan 72 from the fan rotation speed of the exhaust fan 71 and the fan rotation speed of the supply fan 72. The temperature calculation unit 105b can determine the direction of the airflow passing through the inter-air-path damper 80b from the magnitude relationship between the airflow rate of the exhaust fan 71 and the airflow rate of the supply fan 72. The temperature calculation unit 105b can also determine the direction of the airflow passing through the inter-air-path damper 80b from the difference between the airflow rate of the exhaust fan 71 and the airflow rate of the supply fan 72, and the inter-air-path damper opening O PP From the above, the airflow rate between the air ducts F PB can be calculated.

[0087] [3-2. Effects, etc.] As described above, the heat exchange ventilator 1B of the third embodiment has an intake air duct 6b that connects the outdoor intake air duct 24 and the indoor intake air duct 23 provided in the housing 2b, and an exhaust air duct 5b that connects the indoor exhaust air duct 21 and the outdoor exhaust air duct 22. The housing 2b also has a total heat exchanger 3 that exchanges heat between the intake air duct 6b and the exhaust air duct 5b. Inside the housing 2b, an inter-air duct airflow rate F, which is the airflow rate between the exhaust air duct 5b and the intake air duct 6b, is provided between the exhaust air duct 5b and the intake air duct 6b. PB The heat exchange ventilator 1B also includes a control device 100b. The temperature calculation unit 105b of the control device 100b calculates the temperature of the outdoor air T OA and the indoor temperature T RA and the inter-air-path damper opening degree O, which is the opening degree of the inter-air-path damper 80b. PP Based on this, the indoor supply air temperature T SA Calculate. As a result, in the heat exchange ventilation device 1B having the inter-air-path damper 80b for adjusting the ventilation between the supply air duct 6b and the exhaust air duct 5b, the indoor supply air temperature T SA can be calculated.

[0088] According to the second embodiment, the heat exchange ventilator 1B includes an intake air blower 72 provided in the intake air duct 6b and an exhaust air blower 71 provided in the exhaust air duct 5b. The temperature calculation unit 105b calculates the indoor supply air temperature T SA Calculate. This reduces the airflow rate between air ducts F PB is calculated more accurately, and the indoor supply air temperature T SA The calculation accuracy can be improved.

[0089] (Fourth embodiment) Hereinafter, the third embodiment will be described with reference to FIGS. [4-1. Configuration of heat exchange ventilation equipment] Fig. 8 is a diagram showing an example of the configuration of a heat exchange ventilator 1C according to embodiment 4. In Fig. 8, the same elements as those shown in Fig. 1 are denoted by the same reference numerals as those shown in Fig. 1, and the above description of Fig. 1 is used.

[0090] The heat exchange ventilator 1C has a similar configuration to the heat exchange ventilator 1 according to embodiment 1, but a major difference from the heat exchange ventilator 1 is that the heat exchange ventilator 1C does not include the intake bypass air duct 62 and the intake bypass damper 80 in the intake air duct 6c, but instead includes an environmental ventilation damper 80c that adjusts the ventilation between the exhaust air duct 5c and the installation space 9.

[0091] The exhaust air duct 5c and the intake air duct 6c are formed inside the housing 2c by a partition wall 4c that divides the internal space of the housing 2c, and the total heat exchanger 3 is arranged in a position that crosses the entire exhaust air duct 5b and the entire intake air duct 6b.

[0092] The environment ventilation damper 80c is disposed, for example, in a portion of the housing 2c upstream of the total heat exchanger 3 along the airflow in the exhaust airflow duct 5c.

[0093] The environmental ventilation damper 80c controls the environmental ventilation amount F, which is the amount of ventilation air flowing between the exhaust air passage 5b and the installation space 9. NBThe environment ventilation damper 80c is opened and closed within a range from a fully closed position FC to a fully open position FO by an actuator 81c. The actuator 81c is, for example, a motor.

[0094] The heat exchange ventilation device 1C includes a control device 100c inside a housing 2c. The control device 100c controls an indoor supply air temperature T SA is the predetermined target temperature T set The operation of each part of the heat exchange ventilator 1C is controlled so as to satisfy the above.

[0095] Fig. 9 is a diagram showing an example of the configuration of the control device 100c. In Fig. 9, the same elements as those shown in Fig. 2 are denoted by the same reference numerals as those shown in Fig. 2, and the above description of Fig. 1 is cited.

[0096] In the control device 100c, the processor 101 executes the program 103c stored in the memory 102, thereby providing an operation control unit 104c and a temperature calculation unit 105c instead of the operation control unit 104 and the temperature calculation unit 105.

[0097] The operation control unit 104c has the same configuration as the operation control unit 104, but differs in that it controls the environment ventilation damper 80c instead of the supply air bypass damper 80. That is, the operation control unit 104c controls the environment damper opening degree O, which is the opening degree of the environment ventilation damper 80c, by the actuator 81c. PN Controls the environmental damper opening. PN may be, for example, the angle of rotation from the fully closed position FC of the environmental vent damper 80c that opens from the fully closed position FC toward the fully open position FO.

[0098] The operation control unit 104c may control the fan rotation speeds of the exhaust fan 71 and the supply fan 72 according to predetermined conditions, and change the airflow rates of the exhaust fan 71 and the supply fan 72 individually or simultaneously.

[0099] The temperature calculation unit 105b calculates the outside air temperature TOA and the indoor temperature T RA and environmental damper opening O PN Based on this, the indoor supply air temperature T SA Calculate. Specifically, the temperature calculation unit 105b calculates the environmental damper opening degree O PN Based on this, the environmental ventilation rate F NB Calculate the calculated environmental ventilation volume F NB and the outside temperature T OA and the indoor temperature T RA and the indoor supply air temperature T SA The temperature calculation unit 105b calculates the environmental ventilation amount F NB In calculating the environmental ventilation volume F, the larger the air volume of the exhaust fan 71, the NB In addition, the temperature calculation unit 105b calculates a value of the indoor temperature T RA The indoor supply air temperature T SA In addition, when the temperature of the air in the installation space 9 is higher than the indoor temperature, for example, the outside air temperature T OA or outside temperature T OA and the indoor temperature T RA The indoor supply air temperature T SA You may also do this.

[0100] For example, the temperature calculation unit 105b first calculates the outside air temperature T OA and the indoor temperature T RA Based on this, the temperature of the output airflow discharged from the total heat exchanger 3 in the supply air duct 6b is calculated as the supply air discharge temperature T ES Then, the temperature calculation unit 105 calculates the outside air temperature T OA and the indoor temperature T RA and the airflow rate between the air ducts F PB Based on the above, the calculated intake air delivery temperature T ES The amount of ambient airflow F flowing from the ambient airflow damper 80c into the exhaust airflow duct 5c is NB The temperature fluctuation caused by the heat exchange between the air in the intake air duct 6c and the air in the total heat exchanger 3 is corrected, and the corrected intake air delivery temperature T ESIndoor supply air temperature T SA It is calculated as follows.

[0101] [4-2. Effects, etc.] As described above, the heat exchange ventilator 1C of the fourth embodiment has an intake air duct 6c connecting the outdoor intake port 24 and the indoor intake port 23 provided in the housing 2c, and an exhaust air duct 5c connecting the indoor exhaust port 21 and the outdoor exhaust port 22. The housing 2c also has a total heat exchanger 3 arranged therein for exchanging heat between the intake air duct 6c and the exhaust air duct 5c. The housing 2c also has an environmental ventilation damper 80c arranged therein for adjusting ventilation between the installation space 9 of the housing 2c and the exhaust air duct 5c. The heat exchange ventilator 1C also has a control device 100c. A temperature calculation unit 105c of the control device 100c calculates the temperature of the outdoor air between the outdoor air temperature T OA and the indoor temperature T RA and the environmental damper opening O, which is the opening of the environmental vent damper 80c. PN Based on this, the indoor supply air temperature T SA Calculate. As a result, in the heat exchange ventilation device 1C having the environmental ventilation damper 80c for adjusting the ventilation between the exhaust air duct 5c and the installation space, the indoor supply air temperature T SA can be calculated.

[0102] (Embodiment 5) The air conditioning system according to the fifth embodiment will be described below with reference to FIG. [5-1. Air conditioning system configuration] 10, an air conditioning system 10 according to the fifth embodiment includes a heat exchange ventilator 11 and an air conditioner 12. The heat exchange ventilator 11 includes a temperature calculation unit 110. The heat exchange ventilator 11 is any one of the heat exchange ventilators 1, 1A, 1B, and 1C according to the first to fourth embodiments described above. When the heat exchange ventilator 11 is the heat exchange ventilator 1, 1A, 1B, or 1C, the temperature calculation unit 110 is temperature calculation unit 105, 105a, 105b, or 105c, respectively.

[0103] The heat exchange ventilation device 11 is disposed above the ceiling of a target space S in a building H, and ventilates the target space S. The air conditioner 12 includes an indoor unit 12a and an outdoor unit 12b, and adjusts the indoor temperature and / or indoor humidity of the target space S.

[0104] The indoor unit 12a includes an indoor temperature sensor 13 that measures the temperature inside the target space S. The outdoor unit 12b includes an outdoor temperature sensor 14 that measures the temperature outside the building H.

[0105] The temperature calculation unit 110 included in the heat exchange ventilation device 11 calculates the temperatures measured by the indoor temperature sensor 13 and the outdoor temperature sensor 14 as the outdoor air temperature T OA and indoor temperature T RA The indoor supply air temperature T SA Calculate. [5-2. Effects, etc.] As described above, the air conditioning system 10 of the fifth embodiment includes a heat exchange ventilator 11 that ventilates the target space S in the building H, and an air conditioner 12 that air-conditions the target space S. The heat exchange ventilator 11 includes a temperature calculation unit 110. The heat exchange ventilator 11 is any one of the heat exchange ventilators 1, 1A, 1B, and 1C according to the first to fourth embodiments, and includes any one of the temperature calculation units 105, 105a, 105b, and 105c as the temperature calculation unit 110. The air conditioner 12 includes an outdoor unit 12b having an outdoor temperature sensor 14 that measures the temperature outside the building H, and an indoor unit 12a having an indoor temperature sensor 13 that measures the temperature inside the target space S. The temperature calculation unit 110 converts the temperatures measured by the outdoor temperature sensor 14 and the indoor temperature sensor 13 into an outdoor air temperature T OA and indoor temperature T RA The indoor supply air temperature T SA Calculate. As a result, in the heat exchange ventilation device 11 constituting the air conditioning system 10, the indoor supply air temperature T SA can be calculated.

[0106] (Other embodiments) As described above, the embodiments have been described as examples of the technology disclosed in this application. However, the technology in this disclosure is not limited to these, and can be applied to embodiments in which modifications, substitutions, additions, omissions, etc. are made. Furthermore, it is also possible to combine the elements described in the above embodiments to create new embodiments. Therefore, other embodiments will be exemplified below.

[0107] In the first to fourth embodiments, the outside air temperature T OA and indoor temperature T RA is acquired from temperature sensors installed outdoors and indoors. In another embodiment, the heat exchange ventilator 1, 1A, 1B, 1C includes an outdoor intake air temperature sensor installed at the outdoor intake port 24 and an indoor exhaust air temperature sensor installed at the indoor exhaust port 21, and the outdoor air temperature T OA and indoor temperature T RA may be detected by the outdoor intake air temperature sensor and the indoor exhaust air temperature sensor, respectively. For example, the outdoor intake air temperature sensor and the indoor exhaust air temperature sensor may be disposed near the indoor exhaust port 21 indicated by reference symbol P2 in Fig. 1 and near the outdoor intake air port 24 indicated by reference symbol P1 in Fig. 1, respectively. This allows the indoor air temperature to be calculated more accurately.

[0108] In the above-described third embodiment, the inter-air-path damper 80b is provided in the partition wall 41b, which is a part of the partition wall 4b that is upstream of the total heat exchanger 3 along the airflow in the supply airflow path 6b. In another embodiment, the inter-air-path damper 80b may be provided in the partition wall 42b that is downstream of the total heat exchanger 3 along the airflow in the supply airflow path 6b. Even in this case, the temperature calculation unit 105b calculates the temperature of the outside air temperature T OA and the indoor temperature T RA and the opening degree of the inter-air-path damper 80b provided downstream, i.e., the inter-air-path damper opening degree O PP Based on this, the intake air delivery temperature T of the output airflow of the total heat exchanger 3 ES Correct the indoor supply air temperature T SA can be calculated.

[0109] In the fourth embodiment, the environment ventilation damper 80c is provided between the exhaust air duct 5c and the installation space 9, and along the airflow of the exhaust air duct 5c, upstream of the total heat exchanger 3. In another embodiment, the environment ventilation damper 80c may be provided between the supply air duct 6c and the installation space 9, and along the airflow of the supply air duct 6c, upstream of the total heat exchanger 3. Even in this case, the temperature calculation unit 105c calculates the outside air temperature T OA and the indoor temperature T RA and the environmental damper opening degree O, which is the opening degree of the environmental ventilation damper 80c provided in the air supply air passage 6c. PN Based on this, the intake air delivery temperature T of the output airflow of the total heat exchanger 3 ES Correct the indoor supply air temperature T SA can be calculated.

[0110] It should be noted that the above-described embodiments are intended to illustrate the technology of the present disclosure, and various modifications, substitutions, additions, omissions, etc. may be made within the scope of the claims or their equivalents.

[0111] (Addendum) The above description of the embodiments discloses the following techniques.

[0112] (Technology 1) A heat exchange ventilation device that performs total heat exchange ventilation between a target space within a building and the outside of the building, comprising: an intake air duct that connects an outdoor intake port and an indoor intake port, and includes an intake air heat exchange duct and an intake air bypass duct; an exhaust air duct that connects an indoor exhaust port and an outdoor exhaust port; a total heat exchanger that exchanges heat between air passing through the intake air heat exchange duct and air passing through the exhaust air duct; an intake air bypass damper provided in the intake air duct that adjusts the intake air bypass airflow rate, which is the amount of air flowing into the intake air bypass duct; and a temperature calculation unit that calculates the indoor supply air temperature, which is the temperature of the air flowing through the indoor intake air port, wherein the temperature calculation unit calculates the indoor supply air temperature based on the outdoor air temperature, which is the temperature outside the building, the indoor temperature, which is the temperature inside the target space, and the intake air damper opening, which is the opening degree of the intake air bypass damper. According to this, in a heat exchange ventilation device including an intake air bypass duct in the intake air duct that does not pass through a total heat exchanger, the indoor supply air temperature can be calculated without installing a temperature sensor at the indoor intake air port.

[0113] (Technology 2) The heat exchange ventilation device described in Technology 1, wherein the temperature calculation unit calculates an intake air bypass rate, which is the ratio between the heat exchange intake air volume, which is the volume of air flowing into the intake air heat exchange air duct, and the intake air bypass air volume, based on the intake air damper opening degree; calculates an intake air discharge temperature, which is the temperature of air discharged from the total heat exchanger in the intake air heat exchange air duct, based on the outside air temperature and the indoor temperature; and calculates the indoor supply air temperature by correcting the intake air discharge temperature, based on the outside air temperature and the intake air bypass rate. This corrects for the temperature change of the supply air from the total heat exchanger to the indoor supply air outlet in accordance with the increase or decrease in the supply air bypass ventilation volume, which depends on the opening degree of the supply air damper, thereby enabling a more accurate calculation of the indoor supply air temperature.

[0114] (Technical Aspect 3) The heat exchange ventilation device according to Technical Aspect 2, wherein the temperature calculation unit calculates the intake air bypass rate based on the intake air damper opening and the ventilation resistance of the total heat exchanger. This allows the intake air bypass rate to be calculated more accurately by reflecting the imbalance in ventilation resistance between the intake air heat exchange air duct that passes through the total heat exchanger and the intake air bypass air duct that does not pass through the total heat exchanger, thereby allowing the indoor intake air temperature to be calculated more accurately.

[0115] (Technology 4) A heat exchange ventilation device described in any one of Technologies 1 to 3, wherein the temperature calculation unit calculates the indoor supply air temperature when the intake air bypass damper is in the fully open position and / or the fully closed position using an offset opening obtained by converting the amount of air leakage due to the gap in the intake air bypass damper when the intake air bypass damper is in the fully open position and / or the fully closed position into the intake air damper opening when there is no air leakage. This makes it possible to more accurately calculate the indoor supply air temperature when the supply air bypass damper is in the fully open position and / or the fully closed position, even if there is a gap in the supply air bypass damper.

[0116] (Technology 5) A heat exchange ventilation device according to any one of Technologies 1 to 4, further comprising an exhaust fan provided in the exhaust air duct, and wherein the temperature calculation unit calculates the indoor supply air temperature as a temperature equal to the outdoor air temperature when the exhaust fan is stopped. This allows the indoor supply air temperature to be more accurately calculated as the outdoor air temperature when the exhaust fan stops, heat exchange between the exhaust air and the supply air cannot be performed in the total heat exchanger, and the indoor supply air temperature becomes equal to the outdoor air temperature.

[0117] (Technology 6) A heat exchange ventilation device according to any one of Technologies 1 to 5, comprising an intake air blower provided in the intake air duct and an exhaust air blower provided in the exhaust air duct, wherein the temperature calculation unit calculates the indoor supply air temperature based also on the heat generation amount of the intake air blower and / or the exhaust air blower. This allows the indoor supply air temperature to be calculated more accurately by taking into account the influence of the heat generation amount of the supply air fan and / or the exhaust air fan.

[0118] (Technology 7) A heat exchange ventilation device that performs total heat exchange ventilation between a target space within a building and the outside of the building, comprising: an intake air duct connecting an outdoor intake port and an indoor intake port; an exhaust air duct including an exhaust heat exchange air duct and an exhaust bypass air duct connecting an indoor exhaust port and an outdoor exhaust port; a total heat exchanger that performs heat exchange between air passing through the exhaust heat exchange air duct and air passing through the intake air duct; an exhaust bypass damper provided in the exhaust air duct that adjusts the exhaust bypass airflow rate, which is the amount of air flowing into the exhaust bypass air duct; and a temperature calculation unit that calculates the indoor supply air temperature, which is the temperature of the air flowing through the indoor intake port, wherein the temperature calculation unit calculates the indoor supply air temperature based on the outdoor air temperature, which is the temperature outside the building, the indoor temperature, which is the temperature inside the target space, and the exhaust damper opening, which is the opening degree of the exhaust bypass damper. According to this, in a heat exchange ventilation device including an exhaust bypass air duct in the exhaust air duct that does not pass through a total heat exchanger, the indoor supply air temperature can be calculated without installing a temperature sensor in the indoor air supply port.

[0119] (Technology 8) A heat exchange ventilation device that performs total heat exchange ventilation between a target space within a building and the outside of the building, comprising: an intake air duct connecting an outdoor intake port and an indoor intake air duct; an exhaust air duct connecting an indoor exhaust port and an outdoor exhaust port; a total heat exchanger that exchanges heat between air passing through the exhaust air duct and air passing through the intake air duct; an inter-air duct damper that is provided between the exhaust air duct and the intake air duct and that adjusts the inter-air duct airflow rate that is the airflow rate between the exhaust air duct and the intake air duct; and a temperature calculation unit that calculates the indoor supply air temperature that is the temperature of the air flowing through the indoor intake air duct, wherein the temperature calculation unit calculates the indoor supply air temperature based on the outdoor air temperature that is the temperature outside the building, the indoor temperature that is the temperature inside the target space, and the inter-air duct damper opening that is the opening degree of the inter-air duct damper. This allows a heat exchange ventilation device having an inter-airway damper that adjusts the airflow between the intake airway and the exhaust airway to calculate the indoor supply air temperature without installing a temperature sensor at the indoor air intake port.

[0120] (Technology 9) A heat exchange ventilation device according to Technology 8, comprising an intake air blower provided in the intake air duct and an exhaust air blower provided in the exhaust air duct, wherein the temperature calculation unit calculates the indoor supply air temperature based also on the fan rotation speed of the exhaust air blower and the fan rotation speed of the intake air blower. This makes it possible to more accurately calculate the inter-air-path airflow rate, thereby improving the accuracy of calculating the indoor supply air temperature.

[0121] (Technology 10) A heat exchange ventilation device that performs total heat exchange ventilation between a target space within a building and the outside of the building, comprising: a housing having an intake air duct connecting an outdoor intake port and an indoor intake port and an exhaust air duct connecting an indoor exhaust port and an outdoor exhaust port formed therein; a total heat exchanger housed within the housing that performs heat exchange between air passing through the exhaust air duct and air passing through the intake air duct; an environmental ventilation damper that adjusts the ventilation between the exhaust air duct and / or the intake air duct and the space in which the housing is installed; and a temperature calculation unit that calculates an indoor supply air temperature, which is the temperature of air flowing through the indoor intake port, wherein the temperature calculation unit calculates the indoor supply air temperature based on the outdoor air temperature, which is the temperature outside the building, the indoor temperature, which is the temperature inside the target space, and the environmental damper opening, which is the opening degree of the environmental ventilation damper. This allows a heat exchange ventilation device having an environmental ventilation damper that adjusts the ventilation between the intake air duct and / or exhaust air duct and the space in the installation environment of the housing to calculate the indoor supply air temperature without installing a temperature sensor at the indoor supply air port.

[0122] (Technology 11) A heat exchange ventilation device described in any one of Technologies 1 to 10, comprising an outdoor intake temperature sensor provided at the outdoor intake port and an indoor exhaust temperature sensor provided at the indoor exhaust port, wherein the outdoor air temperature and the indoor temperature are detected by the outdoor intake temperature sensor and the indoor exhaust temperature sensor, respectively. This allows the indoor air temperature to be calculated more accurately.

[0123] (Technology 12) An air conditioning system comprising: a heat exchange ventilation device according to any one of technologies 1 to 10; and an air conditioner that performs air conditioning for the target space, wherein the air conditioner comprises an outdoor unit having an outdoor temperature sensor that measures the temperature outside the building, and an indoor unit having an indoor temperature sensor that measures the temperature inside the target space, and wherein the temperature calculation unit calculates the indoor supply air temperature using the temperatures measured by the outdoor temperature sensor and the indoor temperature sensor as the outdoor air temperature and the indoor temperature, respectively. This makes it possible to calculate the indoor supply air temperature without providing a temperature sensor in the housing of the heat exchange ventilation device that constitutes the air conditioning system. [Industrial Applicability]

[0124] The heat exchange ventilation device and air conditioning system disclosed herein can be suitably used as a heat exchange ventilation device that can calculate the temperature of air flowing through an indoor air intake port and perform ventilation control without installing a temperature sensor in the indoor air intake port of the housing, and an air conditioning system that uses such a heat exchange ventilation device. [Explanation of symbols]

[0125] 1, 1A, 1B, 1C, 11 Heat exchange ventilation equipment 2, 2a, 2b, 2c housing 3 Total heat exchanger 4, 4a, 4b, 4c bulkhead 5, 5a, 5b, 5c Exhaust air passage 6, 6a, 6b, 6c supply air path 9 Installation space 10. Air Conditioning System 12 Air conditioner 12a indoor unit 12b Outdoor unit 13 Indoor temperature sensor 14 Outdoor Temperature Sensor 21 Indoor exhaust vent 22 Outdoor exhaust vent 23 Indoor air supply vent 24 Outdoor air intake 51a Exhaust heat exchange air duct 52a Exhaust bypass air duct 61 Supply air heat exchange air passage 62 Intake air bypass duct 71 Exhaust fan 72 Air supply fan 80 Air supply bypass damper 80a Exhaust Bypass Damper 80b Air duct damper 80c Environmental Ventilation Damper 81, 81a, 81b, 81c actuators 100, 100a, 100b, 100c control device 101 processors 102 memory 103, 103a, 103b, 103c Programs 104, 104a, 104b, 104c Operation control unit 105, 105a, 105b, 105c, 110 Temperature calculation section

Claims

1. A heat exchange ventilation device that performs total heat exchange ventilation between a target space in a building and the outside of the building, an intake air duct including an intake air heat exchange air duct and an intake air bypass air duct, the intake air duct connecting the outdoor intake port and the indoor intake port; an exhaust air duct connecting the indoor exhaust port and the outdoor exhaust port; a total heat exchanger that exchanges heat between air passing through the supply air heat exchange air passage and air passing through the exhaust air passage; an air supply bypass damper provided in the air supply air passage and configured to adjust an air supply bypass airflow rate, which is the amount of air flowing through the air supply bypass air passage; a temperature calculation unit that calculates an indoor supply air temperature, which is the temperature of air flowing through the indoor supply air port; Equipped with The temperature calculation unit an outside air temperature, which is the temperature outside the building; an indoor temperature which is the temperature inside the target space; an intake air damper opening, which is the opening degree of the intake air bypass damper; The indoor supply air temperature is calculated based on the Heat exchange ventilation system.

2. The temperature calculation unit calculating an intake air bypass rate, which is a ratio between a heat exchange intake air volume, which is an amount of air flowing through the intake air heat exchange air passage, and the intake air bypass air volume, based on the intake air damper opening degree; calculating an intake air discharge temperature, which is the temperature of air discharged from the total enthalpy heat exchanger in the intake air heat exchange air duct, based on the outside air temperature and the indoor temperature; calculating the indoor supply air temperature by correcting the supply air discharge temperature based on the outside air temperature and the supply air bypass rate; The heat exchange ventilation device according to claim 1.

3. the temperature calculation unit calculates the intake air bypass rate based on the intake air damper opening degree and the ventilation resistance of the total heat exchanger. The heat exchange ventilation device according to claim 2.

4. the temperature calculation unit calculates the indoor supply air temperature when the supply air bypass damper is in the fully open position and / or the fully closed position, using an offset opening obtained by converting the amount of air leakage due to a gap in the supply air bypass damper when the supply air bypass damper is in the fully open position and / or the fully closed position into the supply air damper opening when there is no air leakage. The heat exchange ventilation device according to claim 1.

5. an air supply fan provided in the air supply duct; an exhaust fan provided in the exhaust air duct; Equipped with The temperature calculation unit calculates the indoor supply air temperature as a temperature equal to the outside air temperature when the exhaust fan is stopped. The heat exchange ventilation device according to claim 1.

6. an air supply fan provided in the air supply duct; an exhaust fan provided in the exhaust air duct; Equipped with The temperature calculation unit calculates the indoor supply air temperature based on the heat generation amount of the supply air fan and / or the exhaust air fan. The heat exchange ventilation device according to claim 1.

7. A heat exchange ventilation device that performs total heat exchange ventilation between a target space in a building and the outside of the building, an air supply duct connecting the outdoor air intake and the indoor air supply; an exhaust air duct including an exhaust heat exchange air duct and an exhaust bypass air duct, which connects the indoor exhaust port and the outdoor exhaust port; a total heat exchanger that exchanges heat between air passing through the exhaust heat exchange air passage and air passing through the intake air passage; an exhaust bypass damper provided in the exhaust air passage and configured to adjust an exhaust bypass airflow rate, which is the amount of air flowing into the exhaust bypass air passage; a temperature calculation unit that calculates an indoor supply air temperature, which is the temperature of air flowing through the indoor supply air port; Equipped with The temperature calculation unit an outside air temperature, which is the temperature outside the building; an indoor temperature which is the temperature inside the target space; an exhaust damper opening, which is the opening of the exhaust bypass damper; The indoor supply air temperature is calculated based on the Heat exchange ventilation system.

8. A heat exchange ventilation device that performs total heat exchange ventilation between a target space in a building and the outside of the building, an air supply duct connecting the outdoor air intake and the indoor air supply; an exhaust air duct connecting the indoor exhaust port and the outdoor exhaust port; a total heat exchanger that exchanges heat between air passing through the exhaust air passage and air passing through the intake air passage; an inter-air-path damper provided between the exhaust air duct and the intake air duct, for adjusting an inter-air-path airflow rate, which is an airflow rate between the exhaust air duct and the intake air duct; a temperature calculation unit that calculates an indoor supply air temperature, which is the temperature of air flowing through the indoor supply air port; Equipped with The temperature calculation unit an outside air temperature, which is the temperature outside the building; an indoor temperature which is the temperature inside the target space; an inter-air-path damper opening degree, which is the opening degree of the inter-air-path damper; The indoor supply air temperature is calculated based on the Heat exchange ventilation system.

9. an air supply fan provided in the air supply duct; an exhaust fan provided in the exhaust air duct; Equipped with the temperature calculation unit calculates the indoor supply air temperature based also on a fan rotation speed of the exhaust fan and a fan rotation speed of the supply air fan. The heat exchange ventilation device according to claim 8.

10. A heat exchange ventilation device that performs total heat exchange ventilation between a target space in a building and the outside of the building, a housing having an air intake duct connecting an outdoor air intake port and an indoor air intake port and an exhaust duct connecting an indoor exhaust port and an outdoor exhaust port formed therein; a total heat exchanger housed in the housing that exchanges heat between air passing through the exhaust air passage and air passing through the intake air passage; an environmental ventilation damper that adjusts ventilation between the exhaust air passage and / or the intake air passage and a space in which the housing is installed; a temperature calculation unit that calculates an indoor supply air temperature, which is the temperature of air flowing through the indoor supply air port; Equipped with The temperature calculation unit an outside air temperature, which is the temperature outside the building; an indoor temperature which is the temperature inside the target space; an environmental damper opening, which is the opening of the environmental ventilation damper; The indoor supply air temperature is calculated based on the Heat exchange ventilation system.

11. an outdoor intake air temperature sensor provided at the outdoor intake port; an indoor exhaust temperature sensor provided at the indoor exhaust port; Equipped with The outdoor air temperature and the indoor temperature are detected by the outdoor intake air temperature sensor and the indoor exhaust air temperature sensor, respectively. The heat exchange ventilation device according to any one of claims 1 to 10.

12. The heat exchange ventilation device according to any one of claims 1 to 10, an air conditioner that performs air conditioning for the target space; and The air conditioner is an outdoor unit having an outdoor temperature sensor that measures the temperature outside the building; an indoor unit having an indoor temperature sensor that measures the temperature inside the target space; Equipped with the temperature calculation unit calculates the indoor supply air temperature using the temperatures measured by the outdoor temperature sensor and the indoor temperature sensor as the outdoor air temperature and the indoor temperature, respectively; Air conditioning system.

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